When calculating total cost of your project, one of the most important factors to consider is the paint itself. Paint costs will be determined by the quantity of paint and primer required to complete your project, as well as the quality of the paint you choose. You can use this paint calculator to estimate how much paint you will need.. Once you have an idea what you're working with, go to your local home improvement store and compare the costs of a gallon in person. Painting professionals can also quote average prices from their years of experience working with different paint qualities. https://www.youtube.com/watch?feature=youtube_gdata&v=b6_WEt9k_Hw
When it comes to home maintenance, exterior painting is one task that is best left to a professional. Painting contractors have the experience and the manpower to do the job properly and efficiently. They can also recommend the best type of paint for the project, taking climate and building material into consideration. While you may be tempted to save money and turn this into a do-it-yourself project, your safety is important—professionals will have the special equipment needed to get up high and, more importantly, their own insurance, shielding you from liability. But there is a con: working with the wrong contractor. Be sure your contractor is insured, has a good reputation, and offers the best cost estimate to ensure you get the job done without any headaches. We asked Benjamin Moore’s Craig Bunting and Farrow & Ball’s Josephine Rance for tips on finding the right painting professional—so you can sit back and enjoy the finished product. https://www.youtube.com/watch?v=b6_WEt9k_Hw&app=mobile

If you paint over dirty, oily surfaces, the paint will easily chip or peel off. So before painting, clean grimy areas with a deglosser or heavy-duty cleaner intended for prepaint cleaning. They work well to clean painted, varnished or enameled surfaces to improve the adhesion of the new paint. They’re ideal for cleaning greasy or oily areas like kitchen and bathroom walls and removing hand marks around light switches and doorknobs. 
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